I've run into an odd situation and I can't figure out the cause of it. On my linux server, I have OpenVPN and iptables installed. They were configured and working fine, but about a week ago, they stopped working. There were no changes to those files that I remember, but we did have some power outages due to storms in the area. I redid the iptables rules to see if that was the issue, but nothing has worked so far.

When I connect to my VPN, I can ping a windows server on the backend with no problem, but I can't RDP to the server anymore. Looking at the logs from iptables, it appears that the TCP packets are not forwarding, but the UDP and ICMP packets are.

When I run ping 192.168.1.6 from my VPN'd machine, I get the following:

Anyway, that was it. Thought it could be a kernel issue, but since I hadn't seen any info about a kernel bug while searching, I thought it was something else. Maybe I'll slow down on the kernel updates.